שאלה | Bromberg-Martin and colleagues claim that in addition to the reward-predicting dopamine neurons in the midbrain, some dopamine neurons respond to a novel cue. What is true of these salience-coding neurons?

Bromberg-Martin and colleagues claim that in addition to the reward-predicting dopamine neurons in the midbrain, some dopamine neurons respond to a novel cue. What is true of these salience-coding neurons?

		They decrease their firing rate to a CS that predicts an aversive US and increase their firing rate to a pleasant US.
		They decrease their firing rate to CSs that predict pleasant OR aversive USs.
		They increase their firing rate to CSs that predict pleasant OR aversive USs.
		They increase their firing rate if the monkey receives a US that is aversive only if the CS predicted a pleasant US.